CN209844393U - Environment-friendly gas-insulated totally-enclosed breaker cabinet - Google Patents
Environment-friendly gas-insulated totally-enclosed breaker cabinet Download PDFInfo
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- CN209844393U CN209844393U CN201822128736.3U CN201822128736U CN209844393U CN 209844393 U CN209844393 U CN 209844393U CN 201822128736 U CN201822128736 U CN 201822128736U CN 209844393 U CN209844393 U CN 209844393U
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- iron core
- movable iron
- outer yoke
- end cover
- circuit breaker
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Abstract
The utility model discloses an totally closed circuit breaker cabinet of environmental protection gas insulation, it includes vacuum interrupter and the quick permanent magnetic mechanism in vacuum, the quick permanent magnetic mechanism in vacuum is including the outer yoke that is the cartridge type, the both ends of outer yoke are fixed with first end cover and second end cover respectively, move the iron core axle and alternate in the inner chamber of outer yoke, be equipped with movable iron core in the inner chamber of outer yoke, movable iron core fixes in movable iron core epaxially, the fixed quiet iron core that is equipped with on the second end cover, be equipped with the magnet steel between quiet iron core and the outer yoke, be equipped with the coil former between movable iron core and the outer yoke, movable iron core axle's end is connected with the overtravel spring guide bar, movable iron core axle's periphery is equipped with overtravel spring and branch brake spring, the overtravel spring guide bar passes through the insulator and is connected. Its purpose is in order to provide a simple structure, small, can carry out the totally closed circuit breaker cabinet of environmental protection gas insulation who divides closing operation in succession fast.
Description
Technical Field
The utility model relates to an electrical equipment especially relates to a totally closed circuit breaker cabinet of environmental protection gas insulation.
Background
Since the SF6 gas is one of 6 kinds of gases causing the greenhouse effect of global warming, it is predicted that the use of SF6 gas will be prohibited in 2030. The monostable permanent magnetic mechanism in the existing circuit breaker cabinet is not easy to place in a specified small space due to the complex structure, large volume and complex assembly process, the mechanical property is difficult to optimize and the like, and the application range is limited. The existing mechanism is connected with a vacuum arc extinguish chamber in a switch and needs multi-stage transmission, and the characteristics of switch opening time, speed and the like are difficult to optimize due to the clearance fit of transmission parts. The power consumption of the coil is large, the voltage drop value of the capacitor of the controller is high, and multiple continuous and rapid opening and closing operations are difficult to perform.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a totally closed circuit breaker cabinet of environmental protection gas insulation that simple structure, small, can carry out the divide-shut brake operation fast in succession.
The utility model discloses totally closed circuit breaker cabinet of environmental protection gas insulation, including the vacuum interrupter, still include the quick permanent magnetic mechanism in vacuum, the quick permanent magnetic mechanism in vacuum includes the outer yoke that is the barrel-type, the both ends of outer yoke are fixed with first end cover and second end cover respectively, the one end of moving iron dabber is in the inner chamber of outer yoke through first end cover interlude, be equipped with the moving iron core in the inner chamber of outer yoke, the moving iron core is fixed on the moving iron dabber, fixed quiet iron core that is equipped with on the second end cover, be equipped with the magnet steel between quiet iron core and the outer yoke, be equipped with the coil former between moving iron core and the outer yoke, the end that lies in the outer yoke inner chamber of moving iron dabber is connected with the overtravel spring guide bar, the overtravel spring guide bar passes behind the quiet iron core and extends outside the second end cover, the periphery of moving iron dabber is equipped with overtravel spring and branch brake spring, the overtravel spring, the over travel spring is arranged between the movable iron core and the over travel spring guide rod, the separating brake spring is arranged between the movable iron core and the second end cover, when the movable iron core shaft drives the movable iron core to move, the movable iron core can be simultaneously contacted with the static iron core and the outer yoke, and the over travel spring guide rod is connected with the movable end of the vacuum arc extinguish chamber through an insulator.
The utility model discloses totally closed circuit breaker cabinet of environmental protection gas insulation, wherein the connected mode of moving iron core axle and over travel spring guide bar does: the end face of the over travel spring guide rod is provided with a cylindrical groove, the end of the movable iron core shaft is located in the cylindrical groove, the over travel spring guide rod is connected with the movable iron core shaft through a pin shaft, a sealing ring is installed between the over travel spring guide rod and the movable iron core shaft, and the diameter of a pin shaft hole in the movable iron core shaft is larger than the diameter of the pin shaft.
The utility model discloses totally closed circuit breaker cabinet of environmental protection gas insulation, wherein be equipped with the direction copper sheathing on the second end cap, the over travel spring guide bar passes outside the direction copper sheathing extends to the second end cap.
The utility model discloses totally closed circuit breaker cabinet of environmental protection gas insulation, wherein move and seted up a recess on the iron core, a through-hole has been seted up on the quiet iron core, the both ends of separating brake spring are located recess and through-hole respectively, the one end of over travel spring is located in the recess and with move the iron core and contact.
The utility model discloses totally closed circuit breaker cabinet of environmental protection gas insulation, wherein move and be equipped with on the iron core along the first boss of radial extension, be equipped with on the inner wall of outer yoke along the second boss of radial extension, when moving iron core and quiet iron core contact, first boss with the second boss also contacts.
The utility model discloses totally closed circuit breaker cabinet of environmental protection gas insulation, wherein it fixes to move the iron core through threaded connection's mode move the iron core epaxial.
The utility model discloses totally closed circuit breaker cabinet of environmental protection gas insulation is different with prior art in the utility model discloses when the combined floodgate state, the coil on the coil former switches on, produces the electromagnetic field, moves the iron core motion and contacts with quiet iron core under the effect of magnetic field power, and closed magnetic circuit is magnet steel-outer yoke-moves iron core-quiet iron core-magnet steel this moment. When the mechanism is switched on, the coil is electrified to generate a positive electromotive force (the direction from the movable iron core to the static iron core is specified to be positive), and the movable iron core is driven to move towards the static iron core. When the movable iron core is contacted with the static iron core, the closed magnetic circuit is formed in the mechanism, the over-travel spring guide rod is connected with the vacuum arc-extinguishing chamber in a direct-moving mode through the insulator, and when the movable iron core moves towards the static iron core, the over-travel spring guide rod also drives the vacuum arc-extinguishing chamber to perform a switching-on action and is in a switching-on state through the magnetic field force maintaining mechanism. When the mechanism is used for switching off, the coil is electrified to generate reverse electromotive force, and when the sum of the switching-off spring force, the over travel spring force and the reverse electromotive force is greater than the switching-on holding force of the mechanism, the mechanism is used for switching off. Therefore, the utility model discloses simple structure, it is small, can carry out divide-shut brake operation in succession fast.
The present invention will be further explained with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural view of the environment-friendly gas-insulated totally-enclosed circuit breaker cabinet of the present invention;
fig. 2 is a connection state diagram of the vacuum fast permanent magnet mechanism and the vacuum arc-extinguishing chamber in the utility model;
fig. 3 is a schematic structural view of a vacuum fast permanent magnet mechanism in the present invention;
fig. 4 is a connection state diagram of the movable iron core shaft and the over travel spring guide rod in the present invention.
Detailed Description
As shown in fig. 1 and shown in fig. 2-4, the environment-friendly gas insulated totally-enclosed circuit breaker cabinet of the present invention comprises a vacuum arc extinguish chamber 19, and further comprises a vacuum fast permanent magnet mechanism 17, wherein the vacuum fast permanent magnet mechanism 17 comprises a cylindrical outer yoke 3, a first end cap 1 and a second end cap 11 are respectively fixed at two ends of the outer yoke 3, one end of a moving iron core shaft 15 is inserted into an inner cavity of the outer yoke 3 through the first end cap 1, a moving iron core 2 is arranged in the inner cavity of the outer yoke 3, the moving iron core 2 is fixed on the moving iron core shaft 15, a stationary iron core 4 is fixedly arranged on the second end cap 11, a magnetic steel 5 is arranged between the stationary iron core 4 and the outer yoke 3, a coil former 13 is arranged between the moving iron core 2 and the outer yoke 3, an end of the moving iron core shaft 15 located in the inner cavity of the outer yoke 3 is connected with an over travel spring guide rod 9, the over travel spring guide rod 9 extends out of the second end cap 11 after, the periphery of the movable iron core shaft 15 is provided with an over travel spring 14 and a separating brake spring 12, the over travel spring 14 is located in the separating brake spring 12, the over travel spring 14 is arranged between the movable iron core 2 and the over travel spring guide rod 9, the separating brake spring 12 is arranged between the movable iron core 2 and the second end cover 11, when the movable iron core shaft 15 drives the movable iron core 2 to move, the movable iron core 2 can be simultaneously contacted with the static iron core 4 and the outer yoke 3, and the over travel spring guide rod is connected with the movable end of the vacuum arc extinguish chamber 19 through an insulator 18.
As shown in fig. 1, and as shown in fig. 2, the utility model discloses be provided with control and instrument room 23, aviation socket 24, circuit breaker body switch 25, isolation grounding module 26, gas tank 27 and cable chamber 28 in the totally closed circuit breaker cabinet of environmental protection gas insulation. A synchronizing shaft 21 is arranged above the vacuum fast permanent magnet mechanism 17, a lower isolation tool holder 20 is arranged at the lower end of the vacuum arc-extinguishing chamber 19, and an insulation supporting plate 22 is arranged on the cabinet body at the positions of the insulator 18 and the vacuum arc-extinguishing chamber 19.
As shown in fig. 4, the connection mode between the plunger shaft 15 and the over travel spring guide rod 9 is as follows: the end face of the over travel spring guide rod 9 is provided with a cylindrical groove 8, the end of the movable iron core shaft 15 is located in the cylindrical groove 8, the over travel spring guide rod 9 is connected with the movable iron core shaft 15 through a pin shaft 7, an O-shaped sealing ring 16 is installed between the over travel spring guide rod 9 and the movable iron core shaft 15, and the diameter of the pin shaft hole in the movable iron core shaft 15 is larger than the diameter of the pin shaft 7.
An air damping shock absorption structure is arranged at the joint of the movable iron core shaft 15 and the over travel spring guide rod 9, a relatively sealed space (namely, the inside of the cylindrical groove 8) is formed between an O-shaped ring arranged on the movable iron core shaft 15 and the over travel spring guide rod 9, air is filled in the relatively sealed space, when the mechanism performs a switching-on action, the movable iron core shaft 15 and the over travel spring guide rod 9 perform relative motion, the air existing in the over travel spring guide rod 9 is extruded to be discharged outwards, the capability of reducing structure transmission vibration is formed, and the switching-on bounce problem of the switch is reduced.
The utility model discloses totally closed circuit breaker cabinet of environmental protection gas insulation, wherein be equipped with direction copper sheathing 10 on the second end cover 11, over travel spring guide bar 9 passes direction copper sheathing 10 extends to outside the second end cover 11. And a connecting support plate 6 is fixed on the outer side of the second end cover 11 through bolts.
The utility model discloses totally closed circuit breaker cabinet of environmental protection gas insulation, wherein move and seted up a recess on the iron core 2, a through-hole has been seted up on quiet iron core 4, the both ends of separating brake spring 12 are located recess and through-hole respectively, the one end of over travel spring 14 is located in the recess and with move iron core 2 and contact.
The utility model discloses totally closed circuit breaker cabinet of environmental protection gas insulation, wherein move and be equipped with on the iron core 2 along the first boss of radial extension, be equipped with on the inner wall of outer yoke 3 along the second boss of radial extension, when moving iron core 2 and quiet iron core 4 contact, first boss with the second boss also contacts.
The utility model discloses totally closed circuit breaker cabinet of environmental protection gas insulation, wherein it fixes to move iron core 2 through threaded connection's mode move on the iron core axle 15.
When the utility model is in a closing state, namely the coil on the coil rack 13 is powered on, an electromagnetic field is generated, the movable iron core 2 moves and contacts with the static iron core 4 under the action of the magnetic field force, and the closed magnetic circuit is magnetic steel-outer yoke-movable iron core-static iron core-magnetic steel at the moment. When the mechanism is switched on, the coil is electrified to generate a positive electromotive force (the direction from the movable iron core 2 to the static iron core 4 is specified to be positive), and the movable iron core 2 is driven to move towards the static iron core 4. When the movable iron core 2 contacts the static iron core 4, the closed magnetic circuit is formed in the mechanism, the over-travel spring guide rod is connected with the vacuum arc-extinguishing chamber 19 in a direct-moving mode through the insulator 18, and in the process that the movable iron core moves towards the static iron core, the over-travel spring guide rod also drives the vacuum arc-extinguishing chamber 19 to perform a switching-on action and keep the mechanism in a switching-on state through magnetic field force. When the mechanism is used for switching off, the coil is electrified to generate reverse electromotive force, and when the sum of the switching-off spring force, the over travel spring force and the reverse electromotive force is greater than the switching-on holding force of the mechanism, the mechanism is used for switching off. Therefore, the utility model discloses simple structure, it is small, can carry out divide-shut brake operation in succession fast.
The vacuum fast permanent magnet mechanism 17 of the utility model is a monostable permanent magnet mechanism. The simple and excellent magnetic circuit ensures that the mechanism is smaller and more compact under the condition of ensuring the required contact pressure of the vacuum arc-extinguishing chamber 19. The vacuum fast permanent magnet mechanism 17 can form a direct-acting transmission structure with the vacuum arc-extinguishing chamber 19 in a limited space (in the gas tank 27 of the gas-filled cabinet), so that the switch can have shorter switching-off time due to the reduction of multi-link transmission in motion.
The vacuum fast permanent magnet mechanism 17 is internally provided with an overtravel spring 14, and a special insulating pull rod is not needed in the later assembly process, and the vacuum fast permanent magnet mechanism is connected by a common insulator 18 (the conventional switch overtravel spring is placed on the insulating pull rod).
The vacuum fast permanent magnet mechanism 17 adopts an air damping shock absorption mode, and the capability of reducing structure transmission vibration is achieved through compressed air, so that the switch equipped with the mechanism reduces switch-on bounce.
And coil parameters are optimized, and the power consumption of the coil is reduced. The switch can be rapidly switched on and off for multiple times through the controller (the capacitance voltage drop during the switching-on operation of the controller is reduced).
The utility model discloses use dry air as insulating medium, even gaseous leakage also can not cause the pollution to the environment, gaseous post processing is more simple and convenient, can directly discharge in the air, has reduced the gaseous post processing cost of gas cabinet arc extinguishing.
The environment-friendly gas insulated totally-enclosed breaker cabinet adopts a vacuum rapid permanent magnet mechanism 17, the opening speed can be less than 10ms, and multiple continuous opening and closing operations can be carried out.
The utility model has the advantages as follows:
1. the mechanism is small in size and can be connected with the vacuum arc-extinguishing chamber 19 in a direct-acting mode in a limited space, so that transmission links are reduced, and the opening and closing time of a switch is shortened.
2. Vacuum interrupter 19 is connected the big problem of combined floodgate spring can appear with the mechanism with the direct action mode, the utility model discloses it is obvious to reduce switch combined floodgate spring effect with the air damping structure.
3. The structure is excellent, the assembly process is simple, and the economic benefit is obvious.
4. The mechanism is provided with the over travel spring, and an insulation pull rod with the over travel spring corresponding to the over travel spring is not required to be additionally arranged, so that the economic benefit is obvious.
5. The mechanism adopts a three-phase parallel connection mode to connect, so that the switch has good synchronism. (the three-phase voltage is the same, and the starting time is ensured).
6. The direct-acting connection structure is adopted, transmission links are reduced, and the switching-off time can reach within 10 ms.
7. The vacuum fast permanent magnet mechanism 17 is connected with the vacuum arc-extinguishing chamber 19 in a direct-acting mode to form a breaker body switch 25, the breaker body switch 25 is placed in an air box 27, and dry air is filled in the air box 27 to serve as an insulating medium. The mechanism lead-out wires are led out of the air box 27 in a mode of butting with the aviation socket 24 (head) and are butted with the controller.
8. The dry air is used as an insulating medium instead of SF6, so that the environmental pollution can be reduced.
9. The vacuum rapid permanent magnet mechanism 17 is selected as the operating mechanism, so that the switch has more excellent opening and closing characteristics, and rapid and continuous opening and closing operations can be performed.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (6)
1. The utility model provides a totally closed circuit breaker cabinet of environmental protection gas insulation, includes vacuum interrupter, control and instrument room, aviation socket, circuit breaker body switch, keeps apart ground module, gas tank and cable chamber, its characterized in that: the fast vacuum permanent magnet mechanism comprises an outer yoke and a movable iron core shaft, a first end cover and a second end cover are respectively fixed at two ends of the cylindrical outer yoke, one end of the movable iron core shaft is inserted into an inner cavity of the outer yoke through the first end cover, the movable iron core is arranged in the inner cavity of the outer yoke and is fixed on the movable iron core shaft, a static iron core is fixedly arranged on the second end cover, magnetic steel is arranged between the static iron core and the outer yoke, a coil frame is arranged between the movable iron core and the outer yoke, the end of the movable iron core shaft, which is positioned in the inner cavity of the outer yoke, is connected with an overtravel spring guide rod, the overtravel spring guide rod passes through the static iron core and extends out of the second end cover, an overtravel spring and a branch brake spring are arranged on the periphery of the movable iron core shaft, the overtravel spring is positioned in the branch brake spring, and the overtravel spring is arranged between the movable iron core and the overtravel spring guide, the separating brake spring is arranged between the movable iron core and the second end cover, when the movable iron core shaft drives the movable iron core to move, the movable iron core can be simultaneously contacted with the static iron core and the outer yoke, the over travel spring guide rod is connected with the movable end of the vacuum arc extinguish chamber through an insulator, and the insulator and a cabinet body at the vacuum arc extinguish chamber are provided with insulating support plates.
2. The environmentally friendly gas insulated fully enclosed circuit breaker cabinet according to claim 1, wherein: the connection mode of the moving iron core shaft and the over travel spring guide rod is as follows: the end face of the over travel spring guide rod is provided with a cylindrical groove, the end of the movable iron core shaft is located in the cylindrical groove, the over travel spring guide rod is connected with the movable iron core shaft through a pin shaft, a sealing ring is installed between the over travel spring guide rod and the movable iron core shaft, and the diameter of a pin shaft hole in the movable iron core shaft is larger than the diameter of the pin shaft.
3. The environmentally friendly gas insulated fully enclosed circuit breaker cabinet according to claim 2, wherein: and the second end cover is provided with a guide copper sleeve, and the over travel spring guide rod penetrates through the guide copper sleeve and extends out of the second end cover.
4. The environmentally friendly gas insulated fully enclosed circuit breaker cabinet according to claim 3, wherein: the movable iron core is provided with a groove, the static iron core is provided with a through hole, two ends of the opening spring are respectively positioned in the groove and the through hole, and one end of the over travel spring is positioned in the groove and is contacted with the movable iron core.
5. The environmentally friendly gas insulated fully enclosed circuit breaker cabinet according to claim 4, wherein: the movable iron core is provided with a first boss extending along the radial direction, the inner wall of the outer yoke is provided with a second boss extending along the radial direction, and when the movable iron core is contacted with the static iron core, the first boss is also contacted with the second boss.
6. The environmentally friendly gas insulated fully enclosed circuit breaker cabinet according to claim 5, wherein: the movable iron core is fixed on the movable iron core shaft in a threaded connection mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822128736.3U CN209844393U (en) | 2018-12-18 | 2018-12-18 | Environment-friendly gas-insulated totally-enclosed breaker cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822128736.3U CN209844393U (en) | 2018-12-18 | 2018-12-18 | Environment-friendly gas-insulated totally-enclosed breaker cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN209844393U true CN209844393U (en) | 2019-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822128736.3U Active CN209844393U (en) | 2018-12-18 | 2018-12-18 | Environment-friendly gas-insulated totally-enclosed breaker cabinet |
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| CN (1) | CN209844393U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113257641A (en) * | 2021-05-10 | 2021-08-13 | 北京中磁电气有限公司 | Ultra-fast opening circuit breaker adopting combined operating mechanism |
-
2018
- 2018-12-18 CN CN201822128736.3U patent/CN209844393U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113257641A (en) * | 2021-05-10 | 2021-08-13 | 北京中磁电气有限公司 | Ultra-fast opening circuit breaker adopting combined operating mechanism |
| CN113257641B (en) * | 2021-05-10 | 2023-03-14 | 北京中磁新材科技有限公司 | Ultra-fast opening circuit breaker adopting combined operating mechanism |
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